Transparent prop material made from sugar that safely shatters on impact for film stunts—historically cast from boiled sugar syrup, provides realistic glass-breaking effects without injury risk.
What is Sugar Glass?
Sugar Glass (Zuckerglas) is a transparent breakable material made from sugar, specifically manufactured for safe stunt effects in film. It shatters on impact without posing a risk of injury and appears as real glass on camera.
Basic Principle
| Aspect | Description |
|---|---|
| Material | Sugar-based |
| Function | Safe glass breakage |
| Property | Breaks easily |
| Usage | Stunts, effects |
Manufacturing
| Step | Description |
|---|---|
| Mixing | Sugar, water, syrup |
| Cooking | Hard-crack temperature |
| Pouring | Into molds |
| Cooling | Allow to harden |
Recipe (Basic)
| Ingredient | Proportion |
|---|---|
| Sugar | Main component |
| Corn Syrup | Prevents crystallization |
| Water | For dissolving |
| Cream of Tartar | Optional, texture |
Properties
| Property | Description |
|---|---|
| Transparent | Glass-like |
| Brittle | Breaks easily |
| Edible | Safe on mouth contact |
| Hygroscopic | Attracts moisture |
Applications
| Type | Usage |
|---|---|
| Windows | Breakthrough stunts |
| Bottles | Bar scenes |
| Drinking Glasses | Smashing |
| Mirrors | Dramatic effects |
vs. Modern Alternatives
| Aspect | Sugar Glass | Resin Glass |
|---|---|---|
| Durability | Limited | Longer |
| Moisture | Sensitive | Resistant |
| Cost | Cheaper | More expensive |
| Consistency | Variable | Uniform |
Safety
| Aspect | Advantage |
|---|---|
| Edges | Not sharp |
| Weight | Light |
| Impact | Soft |
| Ingestion | Harmless |
Limitations
| Problem | Cause |
|---|---|
| Humidity | Becomes sticky |
| Heat | Melts |
| Storage | Short shelf life |
| Consistency | Batches vary |
Handling
| Aspect | Procedure |
|---|---|
| Storage | Dry, airtight |
| Transport | Carefully |
| Temperature | Keep cool |
| Timing | Use shortly before shooting |
Set Protocol
| Phase | Activity |
|---|---|
| Preparation | Provide pieces |
| Check | Inspect condition |
| Placement | Mark position |
| Action | Execute effect |
Breakage Behavior
| Factor | Influence |
|---|---|
| Thickness | Breaking strength |
| Temperature | Brittleness |
| Stress | Break pattern |
| Score Lines | Controlled break |
Customizations
| Type | Description |
|---|---|
| Large Surfaces | Window panels |
| Shapes | Bottles, vases |
| Tinted | Colored glass |
| Textured | Frosted glass effect |
Departments
| Team | Responsibility |
|---|---|
| SFX | Manufacturing |
| Props | Placement |
| Stunts | Execution |
| Safety | Monitoring |
Cleanup
| Aspect | Description |
|---|---|
| Shards | Water-soluble |
| Cleaning | Wipe/Wash |
| Costumes | Easily removable |
| Set | No damage |
Alternatives
| Material | Usage |
|---|---|
| Resin | Moisture resistant |
| Wax-Based | Special breaks |
| Pre-Scored | Controlled patterns |
| CGI | Post-enhancement |
Best Practices
| Practice | Reason |
|---|---|
| Test Pieces | Check consistency |
| Backups | Multiple takes |
| Timing | Avoid moisture |
| Documentation | Note recipe |
Today
Sugar glass remains a proven technique for safe breakaway glass effects in film, although modern productions increasingly opt for resin-based alternatives. The combination of low cost, ease of production, and absolute safety continues to make it a top choice for many practical effects – especially when contact with actors is unavoidable.